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<p>Artificial reefs (ARs) are becoming increasingly popular for restoring degraded coral reef ecosystems, enhancing marine biodiversity, and improving fisheries. We investigated the response of fish assemblages over the first 11 months following deployment of small concrete structures around Tioman Island, Malaysia (2º 47.369´ N, 104º 12.259´ E), including the influence of a monsoon season between 2019-2020. Fish abundance and species richness were consistently higher in treated areas than in an adjacent rubble area, with significant seasonal effects. Assemblage structure varied by life stage, trophic group, and community type, with juveniles and planktivore fish showing the strongest increases after the monsoon season. The damselfish <i>Pomacentrus chrysurus</i> dominated across all areas, while the goby <i>Eviota distigma</i> contributed most to dissimilarity between treated areas and the rubble area. The seasonal variations in fish abundance and community composition, along with the presence of adults and juveniles, indicate that these habitats not only attract fish but also support early recruitment. These findings show that small artificial structures can enhance fish diversity and support early recruitment within months of deployment, offering valuable insights for optimizing restoration strategies under seasonal environmental variability.</p>

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Reef fish assemblages and abundance during early reef rehabilitation on the East Coast of Tioman Island, Malaysia

  • 期刊论文

  • 发表日期：

    2026年3月13日

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  • Alberto García-Baciero,
  • Álvaro García-Herrero,
  • Eva Horcajo-Berná,
  • Daniel Yap,
  • Melisa Anderson,
  • Guillermo García-Gómez,
  • Juan Gallego-Zamorano

摘要

Artificial reefs (ARs) are becoming increasingly popular for restoring degraded coral reef ecosystems, enhancing marine biodiversity, and improving fisheries. We investigated the response of fish assemblages over the first 11 months following deployment of small concrete structures around Tioman Island, Malaysia (2º 47.369´ N, 104º 12.259´ E), including the influence of a monsoon season between 2019-2020. Fish abundance and species richness were consistently higher in treated areas than in an adjacent rubble area, with significant seasonal effects. Assemblage structure varied by life stage, trophic group, and community type, with juveniles and planktivore fish showing the strongest increases after the monsoon season. The damselfish Pomacentrus chrysurus dominated across all areas, while the goby Eviota distigma contributed most to dissimilarity between treated areas and the rubble area. The seasonal variations in fish abundance and community composition, along with the presence of adults and juveniles, indicate that these habitats not only attract fish but also support early recruitment. These findings show that small artificial structures can enhance fish diversity and support early recruitment within months of deployment, offering valuable insights for optimizing restoration strategies under seasonal environmental variability.